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This console log may be useful in debugging events.
For example, try introducing a typo in the URL for the event, say by spelling "echo" incorrectly as "ecco". In the console log, you will see that the event is received, and the Pico selected (based on its ECI), but you will not see that the event has fired.
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KRL provides an operator, klog(), which allows us to print information into the logs. It is an operator, rather than a statement, so it is applied to an expression. It prints into the log the message passed to it as an argument, followed by the value of the expression on which it operates. Finally, it returns the value of the expression on which it operates, unchanged. This makes it easy to add to or remove from your KRL code without changing its meaning.
As an example, modify your "hello_world" rule to expect an attribute, named "name" and use it to customize the message returned in the directive.
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